iTunes Store: Associating a device or computer to your Apple ID

Your Apple ID can have up to 10 devices and computers (combined) associated with it. Each computer must also be authorized using the same Apple ID. Once a device or computer is associated with your Apple ID, you cannot associate that device or computer with another Apple ID for 90 days. You can view which devices or computers are currently associated, remove unused devices or computers, and see how long before they can be associated with a different Apple ID from the Account Information page in iTunes on your computer:

1. Open iTunes.
2. Sign in to your Apple ID by choosing Store > Sign In from the iTunes menu.
3. Choose Store > View My Account from the iTunes menu.
4. From the Account Information screen, click Manage Devices. 

Next to each device or computer name, you will be able to see when each was associated to your Apple ID. You will also be able to track how many days are remaining before your associated devices or computers can be associated to a different Apple ID.

Removing an associated device or computer from an Apple ID

To remove a device or computer from your Apple ID:

1. Open iTunes.
2. Sign in to your Apple ID by choosing Store > Sign In from the iTunes menu.
3. Choose Store > View My Account from the iTunes menu. 
4. From the Account Information screen, click Manage Devices.
5. Click the Remove button next to the device name you would like to unassociate.

Note: Removing a device from your Apple ID does not override the 90 day timer. The timer must complete 90 days from the day the device was associated before it can be associated to another Apple ID.